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Expired Canadian patentCanada

Use of a 1-(2-naphthylethyl)-4-(3-trifluoromethylphenyl)-1,2,3,6-tetrahydropyridine for the manufacture of a medicament for the treatment of cerebral and neuronal diseases

CA 2042974 C · Owner: Guzzi, Umberto · Inventors: Guzzi, Umberto; Fournier, Jacqueline; Coude, Francois Xavier

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention concerns the use of i.a. 1-2-(2-naphthyl)ethyl-4-(3-trifluoromethylphenyl)-1,2,3,6-tetrahydropyridine and its pharmaceutically acceptable addition salts for the preparation of medicaments suitable for the treatment and/or prophylaxis of neuronal degenerative processes including senile dementia, vascular dementia and Alzheimer's disease.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed May 21, 1991 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 21, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 21, 1991
GrantedSeptember 17, 2002
Term endedMay 21, 2011
Patent numberCA 2042974 C
Classification (IPC)A61K31/44

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedMay 21, 1991Patent grantedSep 17, 2002Term endedMay 21, 2011

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.